If you have written many functions, it would be more convenient to build up a package. It is also wonderful to share the tools you created by developing a R package. I will introduce some easy steps to achieve this goal.
Create a new project File > New project > New Dictionary > R package
If you have written many functions, it would be more convenient to build up a package. It is also wonderful to share the tools you created by developing a R package. I will introduce some easy steps to achieve this goal.
Preparation We need to creat a project for the new package.
Creat a new project Click these butthons in your Rstudio.
File > New project > New Dictionary > R package
There is a package Parallel
detectCores(): return how many cores exist on your PC.
cl <- makeCluster(np): initialize a cluster mc with np processes.
Apply Operations using Clusters:
clusterCall, clusterEvalQ, clusterApply, clusterExport, clusterMap,
parLapply, parSapply, parApply, parRapply, parCapply
stopCluster(cl): release the occupied cores.
An example Check how many cores exist on my PC.
library(parallel) detectCores() ## [1] 12 Define a function.
sim <- function(x){ rnorm(1, mean = x) } Use parallel to speed up the calculation.